Safety grid and battery module

Abstract

The application discloses a safety grid and a battery module. The safety grid comprises a grid body, the grid body is provided with a first supporting strip and a plurality of second supporting strips, the first supporting strip and the second supporting strips are embedded in a gap between two adjacent battery blocks, the first supporting strip extends horizontally along the length direction of the gap, each second supporting strip is located above the first supporting strip and extends along the vertical direction, the bottom end of each second supporting strip is connected to the top of the first supporting strip, each second supporting strip is distributed at equal intervals along the length direction of the gap, a liquid guide interval is formed between two adjacent second supporting strips and the first supporting strip, the side walls between the two adjacent battery blocks are respectively attached to openings on the two sides of the liquid guide interval, and a liquid storage groove for storing the cooling liquid is formed, so that the battery blocks can be prevented from bulging and deforming, the cooling liquid can be stored between the two adjacent battery blocks, the battery blocks can be sufficiently cooled, and a safe and controllable effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a safety grid and a battery module. BACKGROUND

[0002] The existing battery pack or battery cabinet almost has no automatic fire extinguishing function. When the internal temperature of the battery is too high due to overcharging and discharging, internal plate puncture, or external factors such as line aging and serious wear, a serious safety accident occurs. In order to avoid causing more serious fire, the existing technology sprays the battery with a spray fire extinguishing system, but the flow of the spray fire extinguishing system is not controllable, which can easily limit the cooling effect of the battery block. SUMMARY

[0003] The purpose of the present application is to provide a safety grid and a battery module to solve the problems existing in the prior art, so as to prevent the battery block from bulging and deforming, accumulate cooling liquid between the adjacent two battery blocks, fully cool the battery block, and achieve a safe and controllable effect.

[0004] To achieve the above purpose, the present application provides the following scheme: the present application provides a safety grid, which comprises a grid body, the grid body is provided with a first support bar and a plurality of second support bars, the first support bar and the second support bar are embedded in the gap between the adjacent two battery blocks, the first support bar extends horizontally along the length direction of the gap, each second support bar is located above the first support bar and extends in the vertical direction, the bottom end of each second support bar is connected to the top of the first support bar, each second support bar is distributed at equal intervals along the length direction of the gap, the liquid guide interval is formed between the adjacent two second support bars and the first support bar, and the side walls between the adjacent two battery blocks are respectively fitted at the openings on both sides of the liquid guide interval, and form a liquid storage groove for accumulating cooling liquid.

[0005] Preferably, the radial cross section of the first support bar and the second support bar is in rectangular structure;

[0006] The first support bar has a first side wall on both sides along the width direction of the gap, and the two first side walls are respectively tightly fitted on the side wall of the corresponding battery block;

[0007] The second support bar has a second side wall on both sides along the width direction of the gap, and the two second side walls are respectively tightly fitted on the side wall of the corresponding battery block.

[0008] Preferably, a plurality of reinforcing strips are connected between two adjacent second supporting strips, each of the reinforcing strips is distributed equidistantly along the vertical direction, and the reinforcing strip and the corresponding battery block side wall have a gap for the cooling liquid to pass through.

[0009] Preferably, the thickness of the first supporting strip and the second supporting strip matches the width of the gap, the thickness of the reinforcing strip is thinner than that of the second supporting strip, and the end of the reinforcing strip is connected at the middle position of the second supporting strip along the thickness direction.

[0010] Preferably, the first supporting strip, the second supporting strip and the reinforcing strip are in the form of straight strips.

[0011] Preferably, the two outermost second supporting strips are arranged at the two end positions of the gap along the length direction of the gap, and the length of the second supporting strip matches the height of the gap, and the first supporting strip is arranged at the bottom position of the gap and its length matches the length of the gap.

[0012] Preferably, the top of at least one second supporting strip is connected with a lap strip, the lap strip is arranged above the gap, and the two ends of the lap strip protrude from the two sides of the second supporting strip along the width direction of the gap and are lapped on the top walls of the two battery blocks, respectively.

[0013] Also provided is a battery module, comprising a plurality of battery blocks arranged sequentially along the same straight line direction, and a gap arranged between two adjacent battery blocks for separating the two battery blocks, and a safety grid embedded in each gap, and a binding mechanism matched with the battery blocks, the binding mechanism is wrapped around and tightened on the outer circumferential side of all the battery blocks, for clamping the safety grid of two adjacent battery blocks.

[0014] Also provided is a battery, comprising a battery box, a spraying mechanism and a plurality of battery modules arranged sequentially and equidistantly along the same straight line direction in the battery box, the spraying mechanism is provided with a liquid inlet pipeline and a plurality of nozzles connected with the liquid inlet pipeline, the liquid inlet pipeline is connected with a liquid supply tank arranged outside the battery box, and each nozzle is arranged above the area where each battery module is arranged.

[0015] Preferably, the battery box is provided with a cooling disc, and each battery module is mounted on the cooling disc.

[0016] The present application has the following technical effects compared with the prior art:

[0017] The first support strip and the second support strip constantly support between two adjacent battery blocks, on one hand, can play a role of heat insulation, when the high temperature generated by the internal short circuit of a battery block out of control will not be quickly conducted to the battery blocks on both sides, on the other hand, when the battery blocks are charged and discharged, the stable support of the battery blocks will not be deformed, so that the performance change of the battery blocks in the use cycle is minimized; and when the high temperature generated by the internal short circuit of a battery block out of control exceeds a predetermined value, the spraying mechanism is opened, the spraying mechanism releases the cooling liquid, the cooling liquid passes through the top position between two adjacent second support strips and flows into the liquid storage tank to accumulate, and the cooling liquid accumulated in the liquid storage tank is used to cool the battery blocks, so as to effectively control the temperature of the battery blocks and prevent the occurrence of fire. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0019] Figure 1 It is a front view of the battery module in an embodiment of the present application;

[0020] Figure 2 It is a side view of the battery in an embodiment of the present application;

[0021] Figure 3 It is a schematic of the grid body combined with the battery block in an embodiment of the present application Figure 1 ;

[0022] Figure 4 It is a schematic of the grid body combined with the battery block in an embodiment of the present application Figure 2 ;

[0023] Figure 5 It is a front view of the spraying mechanism when extinguishing fire in an embodiment of the present application;

[0024] Figure 6 It is a side view of the spraying mechanism when extinguishing fire in an embodiment of the present application;

[0025] Figure 7 It is a top view of the spraying mechanism when extinguishing fire in an embodiment of the present application;

[0026] Among them, 1-battery block, 2-bundling mechanism, 3-grid body, 4-lap strip, 5-second support strip, 6-first support strip, 7-strengthening strip, 8-liquid storage tank, 9-solenoid valve, 10-liquid inlet pipeline, 11-sprayer, 12-cooling disc. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0028] The present application aims to provide a safety grid and a battery module to solve the problems existing in the prior art, so as to prevent the bulging deformation of the battery block, accumulate the cooling liquid between the two adjacent battery blocks, sufficiently cool the battery block, and achieve a safe and controllable effect.

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] As shown in Figures 1 to 7 The present embodiment provides a safety grid, which comprises a grid body 3, the grid body 3 is provided with a first support bar 6 and a plurality of second support bars 5, the first support bar 6 and the second support bar 5 are embedded in the gap between the two adjacent battery blocks 1, and preferably the first support bar 6 and the second support bar 5 are made of hard material to ensure that the first support bar 6 and the second support bar 5 are constantly supported between the two adjacent battery blocks 1, which can play a heat insulation role on one hand, and when the high temperature generated by the internal short circuit of a certain battery block 1 cannot be quickly conducted to the battery blocks 1 on both sides, on the other hand, when the battery block 1 is charged and discharged, the battery block 1 is stably supported and will not be deformed, thereby ensuring that the performance change of the battery block 1 during the use cycle is minimal; the first support bar 6 extends horizontally along the length direction of the gap, each second support bar 5 is located above the first support bar 6 and extends in the vertical direction, the bottom end of each second support bar 5 is connected to the top of the first support bar 6, each second support bar 5 is distributed at equal intervals along the length direction of the gap, and a liquid guiding interval is formed between the two adjacent second support bars 5 and the first support bar 6, the side walls between the two adjacent battery blocks 1 are respectively attached to the openings on both sides of the liquid guiding interval, and form a liquid storage groove 8 for accumulating the cooling liquid, so that when the high temperature generated by the internal short circuit of a certain battery block 1 exceeds a predetermined value, the spraying mechanism is opened, the spraying mechanism releases the cooling liquid, the cooling liquid passes through the top position between the two adjacent second support bars 5 and flows into the liquid storage groove 8 for accumulation, and the cooling liquid accumulated in the liquid storage groove 8 is used to cool the battery block 1, so as to effectively control the temperature of the battery block 1 and prevent the occurrence of fire.

[0031] In a specific embodiment, the radial sections of the first support bars 6 and the second support bars 5 are rectangular structures; the first support bars 6 are provided with first side walls on both sides along the gap width direction, and the two first side walls are respectively tightly fitted on the side walls of the corresponding battery blocks 1; the second support bars 5 are provided with second side walls on both sides along the gap width direction, and the two second side walls are respectively tightly fitted on the side walls of the corresponding battery blocks 1, so that the two side walls of the first support bars 6 and the second support bars 5 are tightly fitted on the side walls of the corresponding battery blocks 1, thereby forming a relatively closed liquid storage groove 8 with an open top between the two battery blocks 1, the first support bars 6 and the two adjacent second support bars 5, so as to accumulate the cooling liquid in the liquid storage groove 8.

[0032] In a specific embodiment, a plurality of reinforcing bars 7 are connected between the two adjacent second support bars 5, each reinforcing bar 7 is distributed at equal intervals along the vertical direction, and the reinforcing bar 7 and the side wall of the corresponding battery block 1 have a gap for the cooling liquid to pass through, and the reinforcing bar 7 is used to support and strengthen the second support bar 5, thereby ensuring that the second support bar 5 can effectively abut and support the battery blocks 1 on both sides during the charging and discharging process of the battery blocks 1.

[0033] In a specific embodiment, the thicknesses of the first support bars 6 and the second support bars 5 match the width of the gap, the thickness of the reinforcing bar 7 is thinner than that of the second support bar 5, and the end of the reinforcing bar 7 is connected to the middle position of the second support bar 5 along the thickness direction, so as to optimize the thickness of the reinforcing bar 7, so that the reinforcing bar 7 and the corresponding battery block 1 form a gap for the cooling liquid to pass through, thereby ensuring that the cooling liquid is accumulated in the liquid storage groove 8. Preferably, the thicknesses of the first support bars 6 and the second support bars 5 are both 10 mm and match the width of the gap, and the thickness of the reinforcing bar 7 is 2 mm, thereby leaving about 4 mm of space on both sides of the reinforcing bar 7.

[0034] In a specific embodiment, the first support bars 6, the second support bars 5 and the reinforcing bars 7 are all straight bar structures. Preferably, the two second support bars 5 located at the outermost sides are respectively arranged at the two end positions of the gap along the gap length direction, and the length of the second support bar 5 matches the height of the gap, and the first support bar 6 is located at the bottom position of the gap, and the length of the first support bar 6 matches the length of the gap, so that the structure of the entire grid body 3 matches the structure of the gap, thereby effectively supporting the two adjacent battery blocks 1.

[0035] In a specific embodiment, the top of at least one second supporting strip 5 is connected with a lap strip 4, the lap strip 4 is located above the gap, and the two ends thereof protrude from the two sides of the second supporting strip 5 along the width direction of the gap and are lapped on the top walls of the two battery blocks 1 respectively, so that the grating body 3 is prevented from being arranged in the corresponding gap during the installation of the whole grating body 3, and the two ends of the lap strip 4 are lapped on the top walls of the corresponding battery blocks 1, thereby facilitating the positioning of the grating body 3 in the gap, and achieving the effect of facilitating the installation.

[0036] Further, a battery module is also provided, which comprises a plurality of battery blocks 1 arranged in sequence along the same straight line direction, and a gap for separating the two adjacent battery blocks 1 is arranged between the two adjacent battery blocks 1. A safety grating is embedded in each gap. The battery block 1 is matched with a binding mechanism 2, which is wrapped around and tightened on the outer peripheral side of all the battery blocks 1, and is used for clamping the safety grating of the adjacent two battery blocks 1. Preferably, the binding mechanism 2 adopts a binding belt to wrap the whole battery module, so that the adjacent two battery blocks 1 clamp the grating body 3 located therebetween, and the grating body 3 is fully utilized to achieve the effects of heat insulation and avoiding battery deformation.

[0037] Further, a battery is also provided, which comprises a battery box, a spraying mechanism and a plurality of battery modules arranged in sequence and at equal intervals along the same straight line direction in the battery box. The spraying mechanism is provided with a liquid inlet pipeline 10 and a plurality of nozzles 11 connected with the liquid inlet pipeline 10. The liquid inlet pipeline 10 is connected with a liquid supply tank located outside the battery box. Preferably, an electromagnetic valve 9 is arranged between the liquid inlet pipeline 10 and the liquid supply tank, and a temperature sensor electrically connected with the battery valve is matched in the battery box. When a certain battery block 1 reaches a corresponding temperature, the temperature sensor sends a corresponding signal, the electromagnetic valve 9 is opened, and then each nozzle 11 is supplied with liquid. The cooling liquid is sprayed onto each battery module through each nozzle 11. Each nozzle 11 is arranged in an array above the area where each battery module is located, so as to ensure the uniformity of the spraying of the cooling liquid in the whole battery box, and the cooling liquid can also be sprayed into the space between the adjacent two battery modules, thereby ensuring the full cooling effect in the whole battery box.

[0038] In a specific embodiment, a cooling disc 12 is arranged in the battery box, and each battery module is installed on the cooling disc 12, so as to conduct the temperature of the battery module through the cooling disc 12, thereby further achieving the cooling effect of the battery module.

[0039] Any adaptive changes according to actual needs are within the protection scope of the present application.

[0040] It is apparent that a person skilled in the art can, without departing from the scope of the application, make many modifications to the details of the above-described exemplary embodiments of the application. The application is therefore not limited to the details given hereinabove but can be implemented in other forms without departing from the spirit or essential characteristic of the application. The embodiments shall therefore be considered in all respects as illustrative and not restrictive; the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims shall be considered to limit the scope of the claims in question to the corresponding parts depicted in the figures of the application.

[0041] The above description of the application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form described. Many modifications and variations are possible in light of this teaching. It was chosen and described in order to provide the best illustration of the principles of the application and the practical application and to enable others skilled in the art to utilize the application in various embodiments and with various modifications being suited to the particular use contemplated. Thus, the scope of the application should be determined not with reference to the above description, but should be given with reference to the appended claims, along with their full scope of equivalents.

Claims

1. A safety grille, characterized in that, The device includes a grid body, which has a first support strip and a plurality of second support strips. The first support strip and the second support strips are both fitted into the gap between two adjacent battery blocks. The first support strip extends horizontally along the length of the gap and is supported at the bottom of the side wall of the battery block. Each second support strip is located above the first support strip and extends vertically. The bottom end of each second support strip is connected to the top of the first support strip, and the top end of each second support strip extends to the top of the side wall of the battery block. The second support strips are evenly distributed along the length of the gap. The second support strips located at both ends along the length of the gap are respectively supported at the two side edges of the side wall of the battery block. A liquid guiding gap is formed between two adjacent second support strips and the first support strip. The side walls between two adjacent battery blocks are respectively attached to the openings on both sides of the liquid guiding gap, forming a liquid storage tank for accumulating cooling liquid. Multiple liquid-conducting gaps are provided between two adjacent battery blocks and are evenly distributed along the length of the gap. Each liquid-conducting gap forms a liquid storage tank between the sidewall of the two adjacent battery blocks and the top of the liquid storage tank is open.

2. The safety grille according to claim 1, characterized in that, Both the first support bar and the second support bar have rectangular cross-sections. The first support bar has a first sidewall on both sides along the width of the gap, and the two first sidewalls are respectively tightly attached to the sidewall of the corresponding battery block. The second support bar has a second sidewall on both sides along the width of the gap, and the two second sidewalls are respectively tightly attached to the sidewall of the corresponding battery block.

3. The safety grille according to claim 1 or 2, characterized in that, Multiple reinforcing strips are connected between two adjacent second support strips. Each reinforcing strip is equally spaced along the vertical direction, and there is a gap between the reinforcing strip and the corresponding side wall of the battery block for cooling liquid to pass through.

4. The safety grille according to claim 3, characterized in that, The thickness of the first support strip and the second support strip matches the width of the gap, the thickness of the reinforcing strip is thinner than that of the second support strip, and the end of the reinforcing strip is connected to the middle position of the second support strip along its thickness direction.

5. The safety grille according to claim 4, characterized in that, The first support strip, the second support strip, and the reinforcing strip are all straight strip structures.

6. The safety grille according to claim 5, characterized in that, The two outermost second support bars are respectively positioned at both ends of the gap along the length of the gap, and the length of the second support bar matches the height of the gap. The first support bar is located at the bottom of the gap, and its length matches the length of the gap.

7. The safety grille according to claim 6, characterized in that, At least one of the second support bars has an overlapping strip connected to its top. The overlapping strip is located above the gap, and its two ends protrude from both sides of the second support bar along the width direction of the gap, and overlap the top walls of the two battery blocks respectively.

8. A battery module, characterized in that, It includes multiple battery blocks arranged sequentially along the same straight direction, with a gap between adjacent battery blocks for separating them, and a safety grille as described in any one of claims 1 to 7 is fitted into each gap, and the battery blocks are equipped with a binding mechanism that surrounds and tightens around the outer periphery of all the battery blocks for clamping the safety grille between adjacent battery blocks.

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